Illuminated spirit-level.



J. I. MUGULLUUGH.

ILLUMINATED SPIRIT LEVEL. APPLIOATIOI rILBD ums, 191x.

1,001,206. Patented Aug. 22, 1an.

UNTED STATES NPirrnivi OFFICE. anims mwni irocunmoerr, or naviimzon'i, iowa.

imagination oi Lomi-shunt. lat'entedAug. 22, 1911.`

Application illed January 5, 1811. Serial No. 800,875.

`l'o all whom it ma concern:

Be it known t at I, JAMES I. MUCUL- Lotion, a citizen of the United States, residin at Davenport, in the county of Scott` and tate `of Iowa, have invented certain new and useful Improvements in Illuminated Spirit-Levels; and I do declare the following to be a full, clear, and exact description of the invention, such as will en able others skilled in the art to which it'appertains to make and Vuse the same.'

This invention relates to improvements in illuminated spirit' levels. ,L One object of the invention is to provide a spirit level of this character having an improved construction and arrangement of *electric lighting mechanism placed therein whereby the bubble may be readily seen when used in dark places.

Another ob'ect is Ato provide an electric lighted spirit evel which'will be simple and ine ensive in construction, eiiicient and reliihle in operation' and in which the lightg mechanism isfinclosed and protected 25. from injury.

With these'vand other objects in view the invention consists ofcertain novel features 'of construction, combination and arrangement of parts as will be more full described and particularly pointed4 out in the ap.- pended claims. v

In the accompanying drawings: 'Fi e 1 is a pers tive viewgof a spirit lev 'ecnstructed in accordance with the invention; Fig. 2 is af' central verticallongitudinal sec tion of the saine; Fig.l 3` is a crosssectional view on the line 31-3 of Fig. 2; Fig. v4 is a horizontaisectional'viow.

Referring more particularly to the drawin s, V1 denotes my improved spirit level w ich is provided in olie side withthe usual leveling glass 21nd if2desired may' be provided adjacent to one lLend with the usual plumbin lass 8. Formed in one side` of the level(4 elow .the leveling :g1as's .2'is a' recess 4 in which is ail'ranged a miniature electric lamp socket 5 with which 'is adapted to be engaged a miniature incandescent electric lamp 6. f The recess 4 containing lampo is nda ted to be closedzby a cover plate 7 fori'ne'dj of metal or other suitablematerial and which may be secured to the level over the recees'by screws oriany other suitable fn stc'ning -rmdana In the side of the level adjacent to the recess4isformedareeess8inwhichis zincV contact 10 is recessed as shown so-that when the zinc contact on this end ofthe battery is forced into engagement therewith the batte be held in position in the recess. lIii opposite end of the recess from the end con- 16 the opposite@ with the socket@ j shown. With t e other terminal of the switch 15 is conn conducting wire connected 'a second lamp '19arranged below or in line with the pliunbing whereby this glass may also be illuminated.

adapted torbe arranged the battery 9 for which is adapted` to be engaged with the 11 of. the battery T he spring will the taining the spring 10 is arranged a threaded socket 12 withwhich is adapted to be engaged a combined contact and adjusting screw 13.

With the free end of the screw 13 is ada ted to bel engaged the carbon coiitact terminal 14 of thebbattery, said terminal being in 'tlieform of ranged on the adjacent end of the battery and adapted to receive the end 'of the screw when the battery is inserted in the recess 8. In-applying` tlie,'battery the end having the carbon Contact 14 is f irst inserted in K iie recess and into ,engagement with th a recessed block nri SCI'EW after which the opposite end of the battery having the zinc' contact 11 is forced in to I engagement 'with the spring 10 thereby securely holding the battery in place, at the same time perifiilittino the same to be re moved when desire screw 13 inwardl or outwardly ing the battery irftlie recess the opposit'eend of the' battery w spring 10 with a providing for s which may differ By ad'ustng the iiefore pla- 11 be caused to engage 'the eater or less pressure thus urcl holding the batteries ,s lig tly in length.

e u per edge of thelevel Arran' ed in is a suite le swit i' w 4ich is here shown and is prerabl `of .as shown. l

15,is connec'tedm. electric conductingwire dof-which is connected e usual push button t pe 1th ne terminal of theswitch f the contact screw 13.. as

ed one end of nu electric with may be provided with 4If desired the level in a recess 20 having its o posite end e terminal ci', the lamp socket, the other erminal oflwliich is connected by a conducting wire 18 to the contact switch 10. The wires 1 6, l17 and 18 are adapted to run through suitably arranged grooves and' -::.f to receive the same.

ion

o. gasa n 401i ht artl 'loca' g3. a d

. 4send ef the atm-y 2 'y y a 1,001,906

The lamp 13 is in electrical connection with the battery 9 through extensions 21vof the, conductin wires 17 and 181-whereby said` lamp wil be ashed when the button o1' switch 15 is o erated.

From the loiegoin'g description taken in connection with the accompanying drawings, the construction 'and operation of the invention will be readily understood with- 10 out requirin a more extendedexplanation.` VVarious c an es in the form, proportion an' theminor etails of construction may -be resorted to without departingffrom the principle: or 'sacrificing any of the 1 advantages of the invention as defined in the ap- Vpended claims.

I claimi 1. In a device of the characterdescribed, amain body provided@ with a transverse recess extendin entirely. through it and with l a lon 'tudina recess h aving a conical portion,`t eapex of which opens into the transverse recess, a bubble glass projecting through the meetingpoint. fof the two. re-

.25"cesses, and an electric light 4'in the longitudinal recess. y i

2; In a device of the character described, '.a main body provided with a lo 'tudinal recess, a battery in the recess, therev ing an o nin from the recess throu h the top of t e bo y, a push button seater? in the openin a recess being also provided, havin in the Atop of the body, a second longitudinal recess ,"an extension thereof communicating l 3 5 with the toep recess a bubble 'glass in the #Op ectri ii recess, .anv ght in the second lungi-,

tudinal recess, the two lon tudinal 5: :A:

being connected by channe@ and wires necting the battery pushhutfton and insaid iihannelsf evice of the character desciibqi comprising 'a body provided with-a.

v battery recess, the "coinbiiiatioiitherewith of testimony whereof Il'have hereunto set 1 my'liand inpresence of two subscribing wit-1 9'5 a'eontacts ring transver in one' f Q; itseltY '-1 a' contact;A socket secured-'in 'thefop'pos'i io, @abattant-i recess a battey-lin the. providedwi comprising a main body a socket atomi 'end 'aud a contact; projecig l: and-.1

cess wall, and a contact terminal at the opposite'end of the battery adapted to engage in the recess in the contact spring an e held in position thereby. l

V4. In a device of the character described "5'5 rovided with a battery'recess, a battery t erein, a contact socket and battery terminal in one end of the recess, and a spring in the opposite end of. the recess adapted vtoengage t contact terminal of the battery an serve the double purpose of a battery holding sprin and a contact spring.

5. =n a device of the character described comprising 'ai' main b od having a recess e5 therein and provided lwith a glass and an electric-'battery for illuminating the glass a battery in the recess, a spring in one en 4of ,the recess wired up to the lamp. and

adapted to serve as a retainerl for'the bat- 70 tery and as a contact spring, means" for adjusting the battery against the spring, and a circuit closer. A

6. lIn a device of the character described comprising a main body provided. with a v7'5 l bubble glass `and having formed therein be- 1, low the glass, a lamp receiving ecess,'a battery lleceiv' recess being a o provided adjacent to said lamprecess, means to close said recesses, a combined contact and battery -80 retainingspring arranged Iin one end of said battery reoess,"a fastening and adjusting screw arranged inthe opposite end of the battery recess, a lamp arranged in said lamp recess, abattery arran in said batsa tery recess, said battery having its op osite yterminals in electrical engagement wit said adjusting screw,'a contact spi-ino', a'. ush button switch arranged in one edge o .the

.main .body and `current conducting wires 9o -ada ted to Vconnect said batterywith .said

buttonand a 'th tlie lamp whereby the may be Iflashed when desired.

eo posite-e'o 

